2X New 3.6V 1800mah Rechargeable Battery for Sony PSP-110 PSP-1001 PSP 1000 US
Amazon.com: OSTENT High Capacity Quality Real 1800mAh 3.6V Lithium Ion Polymer Li-ion Polymer Rechargeable Battery Pack Replacement for Sony PSP 1000 PSP-110 Console : Video Games
Create Pandora Battery and Patch Firmware for Sony PSP : 4 Steps - Instructables
Battery for PSP SLIM & LITE PSP 2000 for PSP 2004 for PSP 3000 for PSP 3004 new | eBay